Hnub Kawg Ua Ntawv Thov: Lub Ib Hlis 27, 2023

1. Qhov teeb meem kev siv dej
Nyob rau hauv tus txheej txheem ntawm kev npaj cov pob zeb ua haujlwm siab, kev saib xyuas yuav tsum tau them rau kev xaiv cov slag zoo thiab ntxiv cov hmoov tshauv ya ntau. Qhov zoo ntawm cov khoom sib xyaw yuav cuam tshuam rau cov dej txo tus neeg sawv cev, thiab muaj teeb meem nrog qhov zoo ntawm cov khoom sib xyaw, uas yuav cuam tshuam rau kev ua tau zoo ntawm cov pob zeb. Yog tias qhov kev hloov pauv ntawm slag yog qhov zoo, qhov kev faib ua feem ntawm cov khoom sib xyaw yuav tsum tsis txhob loj dhau, txwv tsis pub nws yuav ua rau muaj teeb meem los ntshav. Nws yog ib qho tsim nyog los tswj qhov feem pua ​​​​ntawm ya tshauv hauv pob zeb kom ntseeg tau tias cov dej txo tus neeg sawv cev ua lub luag haujlwm zoo dua.

2. Qhov teeb meem sib xyaw
Tsim nyog faib cov hmoov tshauv thiab slag tuaj yeem txhim kho kev ua tau zoo ntawm cov pob zeb, txo kev siv cov cement hauv kev tsim kho engineering, thiab txo cov nqi khoom. Qhov zoo thiab qhov zoo ntawm cov khoom sib xyaw yuav cuam tshuam rau kev ua haujlwm ntawm cov dej txo tus neeg sawv cev. Kev txhim kho kev ua tau zoo ntawm cov pob zeb yuav tsum muaj qee yam kev xav tau rau qhov zoo thiab qhov zoo ntawm cov khoom sib xyaw. Nyob rau hauv tus txheej txheem ntawm configuring high-kev ua tau zoo pob zeb, daim ntawv thov ntawm slag hmoov nyob rau hauv lub admixture tuaj yeem txhim kho nws cov kev ua tau zoo. Tus nqi ntawm cov khoom sib xyaw yuav tsum raug teeb tsa raws li qhov tseeb engineering, thiab cov tshuaj yuav tsum tau tswj.

3. Dej txo tus neeg saib xyuas qhov teeb meem
Kev thov cov dej txo cov neeg ua haujlwm hauv kev lag luam pob zeb yuav tsum muaj kev nkag siab txog kev tshawb fawb txog cov dej txo cov neeg siv thiab kev tswj hwm ntawm lawv cov proportions. Xaiv ntau hom dej txo cov neeg ua haujlwm raws li hom cement hauv pob zeb. Hauv kev tsim kho, qhov ntau npaum ntawm cov dej txo cov neeg ua haujlwm yuav tsum tau txiav txim siab tom qab ntau qhov kev sim kom tau txais lub xeev zoo tshaj plaws.

4.Cov teeb meem sib sau ua ke
Cov aggregates siv rau hauv pob zeb yuav tsum tau soj ntsuam los ntawm ntau qhov kev xav, nrog rau cov kev ntsuam xyuas tseem ceeb suav nrog cov duab, qhov ntsuas particle, cov qauv saum npoo, cov ntsiab lus av nkos, cov ntsiab lus ntawm cov av nkos, thiab cov khoom tsis zoo. Cov ntsuas no yuav muaj qee yam cuam tshuam rau qhov zoo ntawm cov khoom sib xyaw, thiab kev saib xyuas tshwj xeeb yuav tsum tau them rau cov av nkos. Cov ntsiab lus ntawm cov av nkos hauv cov pob zeb tsis tuaj yeem tshaj 3%, txwv tsis pub txawm tias cov dej txo cov neeg ua haujlwm ntxiv, qhov zoo ntawm cov pob zeb ua tsis tau raws li tus qauv. Piv txwv li, qee qhov kev tsim kho siv C30 cast-in-place pawg pob zeb. Thaum lub sij hawm sim sib xyaw cov txheej txheem ntawm cov pob zeb, thaum cov dej txo tus neeg sawv cev piv yog 1%, nws tuaj yeem ua tau raws li qhov xav tau ntawm engineering, suav nrog fluidity, slump expansion, thiab lwm yam. Txawm li cas los xij, ntxiv cov dej txo cov neeg sawv cev raws li cov ntaub ntawv sim thaum lub sij hawm tsim kho tsis tuaj yeem ua tau raws li qhov xav tau. cov kev cai engineering lossis ua tau raws li cov qauv teev tseg. Tom qab kws tshaj lij kev tshuaj xyuas thiab kev tshuaj xyuas, nws tau txiav txim siab tias qhov laj thawj tseem ceeb ntawm qhov tshwm sim no yog tias cov av nkos hauv cov khoom zoo tshaj 6%, uas cuam tshuam rau cov dej txo cov nyhuv. Tsis tas li ntawd, cov duab sib txawv ntawm cov ntxhib sib xyaw ua ke tuaj yeem cuam tshuam cov dej txo cov nyhuv ntawm cov dej txo tus neeg sawv cev. Lub fluidity ntawm pob zeb yuav txo qis nrog qhov nce ntawm cov khoom thiab coarse aggregates. Tom qab kev tshawb fawb tshawb fawb, nws tsis txaus los tso siab rau cov dej txo cov neeg ua haujlwm los txhim kho cov txiaj ntsig ntawm cov pob zeb thiab txhim kho nws lub zog. Nws yog ib qho tsim nyog yuav tsum ua kom zoo tshaj qhov sib xyaw ntawm cov pob zeb kom ua tiav cov txiaj ntsig zoo.